"Looks like we get grazed by this with a potential for 3 to 5 inches of snow on the Cape and the Islands, South Shore could see 2 to 4. Once you get north and west of Boston, it only looks like 1 to 3 inches of snow," Storm Team 5 Meteorologist Cindy Fitzgibbon said.

However, the snow will fall most heavily during the Thursday evening commute.

Here are the scenarios for the next two storms:

Winter storm No. 1:

The National Weather Service is monitoring the potential for another snow event with winds gusting 30 – 45 mph on the coast on Thursday into Friday.

The current forecast calls for 1 to 3 inches in western, central and northeast Massachusetts, including Boston, and for 3 to 5 inches of snow in southeastern Massachusetts, the Cape and islands.

There is still some uncertainty regarding the track and timing of this event; a track closer to the Massachusetts coast will lead to more snow, while a further track will lead to less.

Frigid air, likely the coldest so far this season, will move into New England toward the end of the week. Temperatures could reach double digits below zero on Friday night into Saturday, with wind chills reaching between 5 and 15 below zero.

Winter storm No. 2:

Forecasters are also monitoring a potential snowstorm in the Saturday to Sunday time frame. There is still a great deal of uncertainty regarding the timing and impacts of this storm.

"Right now, this looks a moderate snowstorm with perhaps 6 to 12 inches," said Fitzgibbon. The snow will end by Sunday afternoon.

Forecasters also warned of bitterly cold temperatures Friday through the Presidents Day weekend.

"The snow is not going to be melting anytime soon," said National Weather Service Meteorologist Stephanie Dunten. "We recommend homeowners scrape any snow off their roofs to avoid overloading, as we've already seen a few roofs collapsing."

Five hundred members of the Massachusetts National Guard were activated Tuesday to help with snow removal.

"These men and women will deploy across Eastern Massachusetts," Gov. Charlie Baker said, adding MEMA will determine which towns help is most needed.

The National Guard members were staging at Weymouth High School and had arrived from all over the region on Tuesday.

"As we were getting closer, it's just unbelievable to see this amount of snow in this area," Sgt. Major. John Ryan, of the Massachusetts National Guard said.

National Guard equipment, front-end loaders, backhoes and dump trucks are needed to remove the piles of snow, some more than 10-feet high.

"We're on our last leg. We've been going for three weeks straight and with the heavy storms back to back our crews have been going on endless hours," Kenan Connell, of the Weymouth Department of Public Works said.

Most of the National Guard members have been deployed to South Shore towns that have been hardest hit, and they've been clearing snow from fire hydrants and moving snow piles from roads and parking lots.

"We're here to provide support needed to bring it back to some normal state," Ryan said. "That's our job. We're here to support the communities as best as we can and this is why we volunteered."

Baker said the state has purchased two additional snow melters that can process about 25 truckloads of snow every hour.